Nelson's Sparrow
(Ammospiza nelsoni)

Summary

Picture of bird
© John Reaume
For additional photos and vocalizations, visit Dendroica. (Link opens in a new window.)

The Nelson's Sparrow breeds in three distinct areas of Canada: saltmarshes along the coast of Quebec and the Maritime provinces, coastal marshes in southern Hudson's Bay and James Bay, and grassy marshes across the prairie province. The Canadian population has experienced a relatively steady increase since the early 1970s. With more than 80% of the world's breeding population, Canada has a very high responsibility for this species' conservation. This species has been identified as a priority for conservation and/or stewardship in one or more Bird Conservation Region Strategies in Canada.

Designations

Main designations for the species
DesignationStatusDateSubspecies, population
COSEWIC (Canada)Not at Risk1998 
IUCN (Global)Least concern2018 
Wild Species (Canada)Secure2015 
State of North America’s BirdsWatch list2016 
Bird Conservation Region StrategyPriority Species2013 

Population status

Geographic area or populationPopulation change relative to ~1970ReliabilityStatus in relation to goal
CanadaModerate IncreaseHighAt an Acceptable Level
 

Population estimate

Geographic area or populationPopulation estimate
Canada500,000 - 1,000,000 adults
 

Distribution maps

 

Migration strategy, occurrence

Short-distance migrant

Responsibility for conservation

Geographic areaResponsibility based on % of global population
CanadaVery High

General nesting period in Canada

Nesting period starts between early June and mid-June and ends between late July and early August, depending on the region. Before or after this period, the probability of an active nest is lower.
 

Conservation and management

Nelson's Sparrows are know to hybridize with Saltmarsh Sparrows, this along with the changing coastal habitat caused by climate change may affect how both species respond to rising sea levels and extreme weather (Shriver et al. 2016). The major threat facing the Nelson's Sparrow in Canada, particularly in the Atlantic region, is the loss of the large, undisturbed areas of marshy habitats that they require for successful nesting (Erskine 1992, Shaffer et al. 1990, Shriver et al. 2011).

 

Bird conservation region strategies

Environment and Climate Change Canada and partners have developed Bird Conservation Region Strategies in each of Canada’s Bird Conservation Regions (BCRs). In these strategies, selected species are identified as priorities for one or more of the following reasons:

  • conservation concerns (i.e., species vulnerable due to population size, distribution, population trend, abundance, or threats)
  • stewardship responsibilities (i.e., species that typify the regional avifauna or have a large proportion of their range or population in the sub-region)
  • management concerns (i.e., species that require ongoing management because of their socio-economic importance as game species, or because of their impacts on other species or habitats)
  • other concerns (i.e., species deemed a priority by regional experts for other reasons than those listed above or because they are listed as species at risk or concern at the provincial level)

Select any of the sub-regions below to view the BCR strategy for additional details.

BCRs, marine biogeographic units, and sub-regions in which the species is listed as a priority
RegionSub-region and priority type
Atlantic Northern ForestsAtlantic Northern Forests, sub-region and priority type: Atlantic, NB -- Stewardship
Atlantic Northern ForestsAtlantic Northern Forests, sub-region and priority type: Atlantic, NS -- Stewardship
Atlantic Northern ForestsAtlantic Northern Forests, sub-region and priority type: Atlantic, PE -- Stewardship
Atlantic Northern ForestsAtlantic Northern Forests, sub-region and priority type: Quebec -- Other
Boreal Taiga PlainsBoreal Taiga Plains, sub-region and priority type: Prairie and Northern -- Stewardship
Lower Great Lakes/St. Lawrence PlainLower Great Lakes/St. Lawrence Plain, sub-region and priority type: Quebec -- Other
Prairie PotholesPrairie Potholes, sub-region and priority type: Prairie and Northern -- Conservation & Stewardship
Taiga Shield and Hudson PlainsTaiga Shield and Hudson Plains, sub-region and priority type: Ontario -- Conservation & Stewardship
Taiga Shield and Hudson PlainsTaiga Shield and Hudson Plains, sub-region and priority type: Quebec -- Other
 

References